Antifriction-bearing.



T. H. ALFREDS.

ANTIFRICTION BEARING.

APPLICATION FILED MAR. 15, 1913.

1,168,369, Patented Jan. 18, 1916.

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ANTIFRICTION BEARING.

APPLICATION FILED MAR. 15, 1913.

l 168,369. Patented Jan. 18, 1916.

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. SY T E' TORRIS H. ALFREDS, or cnrceso,-.n;r.inors,-ess enos TO new-11v swoons, as f CHICAGO, rumors; Arlene: ewnren, :eXEcU'ronoF SAID woons, nncnesnn, ASSIGNOR TO Arrears. wnrorg mnsrnn- T 1 Specification' oflLetters Patent.

To all whom it may-concern I Be it known that I, Tonn1s H. ALFREDS, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Antifriction-Bearings; and I do hereby declare that the folalowing is a full, clear, and exact description thereof, reference being had to the a.ccompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in antifriction bearings, more particularly applicable as antifriction' side bearings for.

railway cars and consists of the matters here inafter described and more particularly pointed out in the appended claims.

In the drawings :Figure ,1 is a Viewrepresenting a longitudinal central section through my improved side bearing,- showing the antifriction elements as they appear when transmitting load. Fig. 2 is a top plan View of the bearing. Fig. 3 is an end view of the same. Figs. 4 and 5 are transverse sections taken in planes indicated, .re-

spectively, by the lines 44 ,and 5'5, of.

Fig. '1. Fig. 6 is a perspective view of the casing with a part broken away to more clearly illustrate the interior construction thereof. Fig. 7 is a perspective vieweof'the cover plate with a wear-plate attached thereto. Fig. 8 is a perspective view of the care riage which supports the antifriction elements. Fig. 9 is a view representinga lon-.

gitudinal central section through a side bearing embodymg my invention ma modified form. Fig. 10 IS a transverse sectional view taken in a planeindicated by the line 1010 of Fig. 9.

Referring now to the embodiment of my invention illustrated in the drawings and particularly in Figs. 1 to 8, inclusive, 1O

10min such manner that the ecovermay be indicates a casing that is attached to the body bolster 11 of a car and contains and supports the movable parts of the bearing. Said casing is open at its top and bottom and has upright end walls .12, .12, and side walls 13, 13. .14 indicates a cover for the topof the casing which issupported on the side walls of the casing by means of longitudinally extending shoulders 15, 15 theredropped into place and seated with its top surface flush with the top of the casing. A

wear-plate 16 is secured to the underside of the cover plate 14 by means of rivets 16 16. Said wear' plat-e is of a width equal to the distance between the side walls of the casing and extends the .full length of the interior thereof.

The antifriction elements 'are supported. 1n a carnage 17 suspended withinand sup- 1 ported by the casing 10 and capable of a longitudinal movement therein. The carriage, as shown, consists of a rectangular frame (see Fig. 8.) having side members 19, 19 and transverse end members 20, 20. Said carriage has end extensions 21, 21, which, as shown, consist of bars, rectangular in cross-section, fixed to its end members 20 in the median plane of the carriage. Said bars extend beyond the end wallsl2, 12 of the casing and have sliding bearing in slots 12, 12 formed in said end walls. Said. slots l2 are open at the top andare extended as indicated at 12 into the end flanges.

of the casing (see Fig. 6) so that said car-- riage with its end extensions, may be insert ed into the casing'through its open top.

The parts ofthe slots 12. 123,- above the upper edge of the end extensions 21, 21 of; the carriage, are closed when the parts areassembled by depending bars 14 ,114, fixedv to the 'ends'of the cover-plate l4, and the parts of the slots indicated at 12*, 12 are- 1 Patented aiLi'S,

closed by longitudinally extending lugs 714 ,v

14 'at the end of the cover-plate 14. This construction provides a suitable support for the carriage which will permit of no move.- ment thereof, except in a longitudinal di..

rection.

The side members 19, 19 of the carriage ments to a central position in the casing.

after said antifriction elements in transmit tingload have caused the carriage to move frornlsa d position toward one or the other means in the present instance comprises.

end of the casing and when'saidelements have ceased to transmit load. Said resilient coiled expansion springs 25, 25 surrounding the extension bars 21, 21 of the carriage and interposed between the end walls 12, 12 of the casing and the transverse end members 20, 20 of the carriage.

The operation of my improvedside hearing is as follows: When in the transmissicn of load from the body bolster to the truck bolster (the truck-bolster being provided with a wear-plate 40) the antifriction elements are rolled toward one end of the casing, they impart movement to the car: riage 17 by means of the engagement of their trunnions with the. vertical sides of the grooves 19 in which said trunnions are mounted. As the carriage is moving toward one end of the casing, the supporting mem-' hers of the carriage will have movement in. the slots in the end wall of the casing, com pressing the spring at that end of the casing toward which the carriage is moving.

hen the antifriction elements are released, the expansive action of the spring that has been compressed will return the carriage, and with it the rollers to their initial central position.

It may be found preferable to employ a single spring to return the carriage to its normal position and such construction is illustrated in Figs. 9 and 10, wherein like parts are indicated as before. The carriage 30 in this instance comprises side members 31, 31, transverse end members 32, 32, and a central, longitudinally extending, dividing member 83 which divides the carriage into two compartments 30*, 30*. The side and central members are provided with hearing slots 19 in which are supported the trunnions of the antifriction elements. 3+,

v3e indicate the end extension bars of the carriage, which are adapted for sliding engagement with slots in the end walls of the casing, as before. The end parts 3% of the said bars are-1n this case ofiset upwardly to provide opposing shoulders 3?, 37 ber tween which is mounted an expansion co led 38, 38 indicate pins made intesaid shoulders 37 which act to Said spring 39. gral. with support the ends of said spring.

(I spring abuts also at its ends against. the end walls of the casing at each sideof the slots through which thecarriage end bars extend. The side bearing is attached to the bolster by means of bolts 50 the heads of which cooperate with the upper edges of the ext'en-' sion bars as, to prevent displacement of the carriage in an upward direction when the carriage is moved beyond the position in which the end prevent such displacement.

The operation of the construction illustrated in Figs. 9 and 10 isquite familiar.

move with the carriage.

bars 14 of the cover-plate \Vhen the carriage in this instance is moved toward one end of the casing, the end of the, spring toward which the carriage s' moving will remain stationary by reason of itsabutment vagainst the end wall otthe casing, while the other" end of the spring being in engagement with the shoulder 37 of the extension bar of the carriage, will This placeswthe spring in compression. When the'aht'ifrio tion elements are'released, the expansive action of the compressed spring will cause the carriage and its rollers to return to the initial central position.

To introduce the carriage into the casing; the carriage is tilted and one of the supporting members inserted into the slot in;

the casing with thespring in place. The carriage is then moved'toward that end of;

the casinginto which the supporting "member has been inserted and the other support ing member is then dropped into the slot in the opposite end wall of the casing. The antifriction elements areplac'ed in position on the carriage, when the cover-plate with its attached wear-plate is dropped in place with the depending lugs thereof engaging the upper edge of the supporting member and thus close the slots in the end walls above the supporting members. The device is thus assembled.

The carriage is supported in the casing by means which allows endwise travel of the same under-load but willallow of no tilting of the carriage in a lateral plane,

(the supporting members of the carriage being preferably rectangular inncros's-sect on) and thus prevents rattling and undue .Wear caused by vibration of the car body. j

I' claim as myinvention- V nation of'a' casing having apertured end members, an antifriction device including a carriage longitudinally movable in said cajs-- tension bars fixed to said carriage in theplane of the movement thereof, said bars extending through the apertures in said cas-' ing end walls and providing a non-rotative sliding bearing support for the carriage.

3. In an antifriction bearing, the combi-' nation of a casing having side and end walls, said end walls having bearing apcr tures therein, anantifriction device including a carriage movable in said casing, and

.1. Inan antifriction bearing, the combiantifriction bearin the combi-.

extension bars fixed to said carriage, said extension bars having a non-rotative sliding bearing support in said aperture.

4. In an antifriction bearing, the combination of a casing having side and end walls, said end Walls having bearing apertures therein, and an antifriction device including a carriage longitudinally movable in said casing, said carriage being provided at its ends With rigid extension bars, said bars having a non-rotative bearing in said apertures.

5. In an antifriction bearing, the combination of a casing having side and end walls, said end walls having bearing apertures therein, an antifriction device including a carriage longitudinally movable in said casing, extension bars fixed to said carriage, said bars having a non-rotative sliding bearing in the apertures in said end walls and resilient means for centering the carriage in said casing.

6. In an antifriction bearing, the combination of a casing having side and end walls, said end walls having bearing apertures therein, an antifriction device including a carriage longitudinally movable in said casing, extension bars fixed to said carriage, said bars having a non-rotative sliding bearing in the apertures in said end walls and resilient means interposed between the carriage and the end walls of the casing for centering said carriage in said casing, said means comprising springs supported on said bars.

7. In an antifriction bearing, the combination of an open top casing having side Walls and slotted end walls, a carriage longitudinally movable in said casing, said carriage having parallel longitudinal side members and parallel transverse end members, longitudinal extension bars made integral with the end members of the carriage and having sliding bearing in the slotted end wall of the casing, and a cover plate supported by the side walls of the casing adapted to close the opening in the top of said casing, said cover plate having depending lugs which project into and fill that part of the slots in the casing end Walls .ing bearing in the slotted end Wall of the casing, a cover plate adapted to close the opening in the top of said casing, said cover plate having depending lugs which project into and fill that part of the slots in the casing end Walls not occupied by the said extension bars, and resilient means carried by said bars interposed between the end members of the carriage and the end wall of the casing, said resilient means being adapted for centering the carriage in said casing.

In testimony, that I claim the foregoing as my invention I aflix my signature in the presence of two Witnesses, this 13th day of March A. D. 1913.

TORRIS H. ALFREDS.

Witnesses:

,Gno. R. WILKINs, MARIE E. Bnonnmcx.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

